Plan - I have my second check yearly check this Monday by the installer. This will also give some more stats on the system performance at present along with incoming/outgoing temperatures of the pond loops. Then, we will have a 'second' person check it. We are learning this geo system more and more and still feel there is something not quite right as my hubby and I both go to different forums and everyone seems to not have to use the strips (or as much). My hubby still thinks it's with the pond loops....not the unit. IMO - if i'm going to pay a couple of months of high electric bills and for them to keep coming check it out--where's my savings? I'll let you know what gives.